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Dive into the research topics where Ryutaro Ohashi is active.

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Featured researches published by Ryutaro Ohashi.


Solid State Nuclear Magnetic Resonance | 2018

Investigation of the effects of sintering and indium-doping of zinc oxide using 67Zn magic angle spinning NMR analysis

Ryutaro Ohashi; W. Sato; Motohiro Mizuno; Shinobu Ohki; Kenzo Deguchi; Masataka Tansho; Tadashi Shimizu

Indium-doped zinc oxide, a potential alternative material to indium tin oxide, was analyzed in powder form via 67Zn magic angle spinning nuclear magnetic resonance (MAS NMR). The 67Zn MAS NMR results show that the line shapes of zinc oxide were broadened by sintering, which was also observed for indium-doped zinc oxide, in which the broadening also depended on the sintering time. Furthermore, the line shapes of indium-doped zinc oxide were significantly broader than those of the corresponding zinc oxide, and were independent of the degree of indium doping. This indicates that indium atoms are associated into cluster-like structures in this compound.


Polymer Journal | 2014

Extension of polyethylene chains by formation of polypseudorotaxane structures with perpentylated pillar[5]arenes

Tomoki Ogoshi; Hitoshi Kayama; Takamichi Aoki; Tada-aki Yamagishi; Ryutaro Ohashi; Motohiro Mizuno


Macromolecules | 2014

Local Structure and Dynamics of Imidazole Molecules in Proton-Conducting Poly(vinylphosphonic acid)–Imidazole Composite Material

Motohiro Mizuno; Ayano Iwasaki; Tsuyoshi Umiyama; Ryutaro Ohashi; Tomonori Ida


Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2013

Molecular-size-distribution-dependent aggregation of humic substances by Na(I), Ag(I), Ca(II), and Eu(III)

Shuji Tamamura; Ryutaro Ohashi; Seiya Nagao; Masayoshi Yamamoto; Motohiro Mizuno


Chemistry Letters | 2013

Analysis of Molecular Motion of Proton-conductive Imidazolium Hydrogen Succinate Crystal Using Solid-state NMR

Tsuyoshi Umiyama; Ryutaro Ohashi; Tomonori Ida; Motohiro Mizuno


Physical Chemistry Chemical Physics | 2016

An NMR study on the mechanisms of freezing and melting of water confined in spherically mesoporous silicas SBA-16.

Tatsuya Miyatou; Ryutaro Ohashi; Tomonori Ida; Shigeharu Kittaka; Motohiro Mizuno


Journal of Molecular Structure | 2016

Hydration water dynamics in bovine serum albumin at low temperatures as studied by deuterium solid-state NMR

Tatsuya Miyatou; Takashi Araya; Ryutaro Ohashi; Tomonori Ida; Motohiro Mizuno


Chemistry Letters | 2012

Observation of 47,49Ti NMR Spectra of TiCl4/MgCl2 Catalysts under an Ultrahigh Magnetic Field

Ryutaro Ohashi; Masayoshi Saito; Takashi Fujita; Toshihito Nakai; Hiroaki Utsumi; Kenzo Deguchi; Masataka Tansho; Tadashi Shimizu


Hyperfine Interactions | 2015

Molecular orientation of hydrogen-bonded liquid crystal (6BA)2-(BPy)x as Studied by 2H NMR

Motohiro Mizuno; Y. Higashima; A. Yamashita; Y. Ishida; Tatsuya Miyatou; Yoshihide Kumagai; Ryutaro Ohashi; Tomonori Ida


Hyperfine Interactions | 2015

Local structure and molecular motions in imidazolium hydrogen malonate crystal as studied by 2H and 13C NMR

Motohiro Mizuno; M. Chizuwa; Tsuyoshi Umiyama; Yoshihide Kumagai; Tatsuya Miyatou; Ryutaro Ohashi; Tomonori Ida; Masataka Tansho; Tadashi Shimizu

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Tadashi Shimizu

National Institute for Materials Science

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Kenzo Deguchi

National Institute for Materials Science

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Masataka Tansho

National Institute for Materials Science

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Toshihito Nakai

Tokyo University of Agriculture and Technology

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